pathinfo() returns an associative array containing information about path. The following array elements are returned: dirname, basename and extension.
You can specify which elements are returned with optional parameter options. It composes from PATHINFO_DIRNAME, PATHINFO_BASENAME and PATHINFO_EXTENSION. It defaults to return all elements.
Note: For information on retrieving the current path info, read the section on predefined reserved variables.
See also dirname(), basename(), parse_url() and realpath().